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Finding the Fourth Proportional to 279,314.36, 419,179.40 and 137,235.90

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Solution

The fourth proportional to 279,314.36, 419,179.40 and 137,235.90 is: 205,955.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,314.36 : 419,179.40 = 137,235.90 : x
  2. Step 2: Convert to fraction form
    279,314.36/419,179.40 = 137,235.90/x
  3. Step 3: Cross multiply
    279,314.36x = 419,179.40 × 137,235.90
  4. Step 4: Simplify right side
    279,314.36x = 57,526,461,534.28
  5. Step 5: Solve for x
    x = 57,526,461,534.28/279,314.36
  6. Step 6: Final answer
    x = 205,955.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.